Annular Oven Control Knob With Stable Guided Rotation
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Solution Overview
Problem
Existing household appliance control devices with movable operating elements and electronic display panels face challenges in achieving a compact, user-friendly design with intuitive information presentation, often requiring large space and being clumsy due to the separate arrangement of components.
Innovation Solution
A control device with a ring-shaped front part and slide ring coupled via a guide, allowing for secure rotation without falling, featuring a resilient engagement element in a groove for smooth and precise movement, and a stationary sliding ring for stable positioning, enabling easy operation and compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operating element is designed as a large toggle or cylinder to enable easy gripping and rotation, then the ease of operation is improved, but the device occupies more space and becomes less compact
Solution Approach 1:
The operating element is divided into two parts: a front part for gripping and rotating, and a slide ring that guides movement. This segmentation allows the front part to be smaller while maintaining ease of operation through the guide mechanism.
Solution Approach 2:
A guide mechanism with groove and engagement element acts as an intermediary between the front part and the actuation mechanism. This intermediary enables precise rotational movement with minimal space requirement.
2Reliability
If the front part is coupled securely to prevent falling out, then the reliability is improved, but the friction increases making rotation cumbersome
Solution Approach 1:
The engagement element is designed to be resilient and arranged in a prestressed manner, creating a dynamic coupling that maintains secure connection while allowing smooth rotational movement through controlled elasticity.
Solution Approach 2:
The engagement element's resilient properties and prestressed arrangement change the mechanical parameters of the coupling, providing both security and low friction through elastic deformation during rotation.
3Reliability
If the components are arranged separately to maintain functional independence, then the reliability is improved, but the device complexity and space requirements increase
Solution Approach 1:
The guide mechanism merges the coupling function and movement guidance function into a single integrated structure, reducing component count while maintaining functional independence through the resilient engagement element.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a compact, user-friendly, and precisely operable control device that allows for easy setting of operating conditions with reduced space requirements and minimal friction, enhancing user experience and operational precision.
Implementation Method 1
The engagement element is designed to be resilient as viewed in the radial direction of the sliding ring and in the radial direction of the front part
Implementation Method 2
The guide has a groove which is open in the radial direction of the front part and comprises at least one engaging element for engaging in the groove
Implementation Method 3
due to the force of gravity when the front part is vertically oriented, the front part also sits on the engagement element, so to speak, so that this results in a supporting or lifting bearing of the front part
Data Source
Figure 1~4
Figure 5
AI summary
The invention relates to an operating device for a domestic appliance (1), comprising an electronic display field (11) and an operating element (13), which can be moved in relation to the display field (11) in order to set operating conditions of the domestic appliance (1), wherein the operating element (13) has a front part (17), which has a top side (18) inclined inward. The invention further relates to a baking oven (1) having an operating device (10).